Hacking the Digital and Social System
When you live in a totalitarian, controlled and “happy” society, and you want to be a hacker, you have to hack the social system first. Being just an engineer doesn’t cut it, you have to be a hypocrite, dissident and a smuggler at the same time. That’s the motto of my personal story, which starts in Yugoslavia, and ends in Serbia. No, I didn’t move, I’m still in Belgrade, only the political borders have changed.
Half a century ago, when I was in elementary school, I discovered the magical world of HAM radio. I became a member of two amateur …read more
Downloading Satellite Images via FM Radio
Did you know weather satellites transmit their weather images over an FM frequency? And now that you know… You can intercept them yourself with a $10 FM radio dongle!
American NOAA weather satellites are in a polar orbit around earth, and each one will pass the same point approximately every 12 hours. When it is overhead, the signal is strong enough to receive. After [Matt] found out this tidbit of knowledge, he had to learn how to intercept the images himself.
The satellites transmit the images over the 137MHz band, and using a radio tuner USB dongle, you can record …read more
Build Your Own CPU? That’s the Easy Part!
You want to build your own CPU? That’s great fun, but you might find it isn’t as hard as you think. I’ve done several CPUs over the years, and there’s no shortage of other custom CPUs out there ranging from pretty serious attempts to computers made out of discrete chips to computers made with relays. Not to trivialize the attempt, but the real problem isn’t the CPU. It is the infrastructure.
What Kind of Infrastructure?
I suppose the holy grail would be to bootstrap your custom CPU into a full-blown Linux system. That’s a big enough job that I haven’t …read more
One Way to Recharge Alkaline Batteries
It says it right on the side of every alkaline battery – do not attempt to recharge. By which of course the manufacturer means don’t try to force electrons back into the cell. But [Cody] figured he could work around that safety warning chemically, by replacing the guts of an alkaline dry cell.
The batteries in question were certainly old, gnarly looking, and pretty dead – [Cody] barely got a reading on his multimeter. As you can see after the break, he cleaned off the exterior corrosion and did a quick teardown of the dry cells, removing the remains of …read more
96 MacBook Pros: Most Expensive Server Rack We’ve Ever Seen
Ever see a standard server rack stuffed full with 8-dozen MacBook Pros? Well now you have.
Now before the torrential downpour of anti-Mac comments come, this actually has a purpose. No seriously. Besides, what company in their right mind would spend that much money on a rack full of paperweights? Kidding.
[Steve] works for a company that designs electronics, and for a particular launch they needed to perform a lot of testing — using MacBook Pros. There are ways he could have emulated OS X on a much cheaper hardware setup, but the whole point was to test the product …read more